Trace-trimming machine



H. P. OSBORNE.

TRACE TRIMMINGMAGHINE'.

No. 258,313. v Patented May 23,1882.

UNITED STATES PATENT OFFICE.

HENRY F. OSBORNE, OF NEWARK, NEW JERSEY.

TRACE-TRIMMING MACHINE.

SPEOIFIC'ATION forming part of Letters Patent No. 258,313, dated May 23, 1882,

Application filed November 21, 1881.

To all whom it may concern Be it known that I, HENRY F. OSBORNE, a citizen of the United States, residing in the city of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Trace-Trimming Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

My invention relates to an improvement in trace-trimming machines of the class in which the guides and trimming-knives are secured to a cross-head mounted upon two pillars; and it consists in an improved construction for the guides and the knives, and in an improved method of uniting the cross-head removably to the pillars, so as to secure access to the knives when desired.

As the machines upon which my improvements are used are already well known, I have only shown one general view of the same in the drawings annexed, wherein- Figure l is a front elevation of a machine constructed with my improvements. Fig. is a plan of the cross-head inverted to show the connection of the knives with the guides. Fig. 3 is a section on line so a: in Fig. 2. Fig. 4 is a side elevation of the cross-head. Fig. 5 is a plan view of one of the knives inverted, and Figs. 6 and 7 are edge and side views of the knife.

The pillars A are represented as mounted upon a bed,B, the cross-head 0 being secured on the top of the pillars by tenons b, pinned in sockets 0, formed upon the lower side of the cross-head, and a clamp, D, being arranged to slide upon the pillars beneath the cross-head, and pressed thereto by springs d, applied to the pillars between the bed and clamp. To lower the clamp for the introduction of the trace, a link, E, is connected to the lower side of the same and extended through the bed to a lever, F, by which the clamp can be depressed at pleasure.

The parts thus far described are common to such machines, with the except-ion of the means for connecting the cross -head to the pillars, which has heretofore been done by extending the tenons bthrough the cross-head and applying nuts to their upper ends. The lower ends are secured in the bed 13 by similar stems (No model.)

passed through holes in the sameand provided with nuts a.

The cross-head and guides are shown enlarged in Figs. 2, 3, and 4, the guides being double and arranged so as to direct the trace both in approaehing and leaving the knives e. To adapt theknives to out upon the upper side as well as the edge of the trace in rounding the-corners in the usual way, the knives require to be fastened at one side of the guide and to be bent at a right angle, as shown in the figures. An offset seat, 71, is therefore formed at the middle of theblock m, which is formed upon the inside of each guide to gage the flat side of the trace. The guides are flat plates extending downward from the crosshead and sidewise from the clamp D, which is fitted to a rectangular notch, D, cut in their lower side. The plates are attached at their upper edge to studs H, which extend through a slot, I, in the cross-head,and are provided at their upper ends with nuts J and washers j to hold them therein. One of the guides is clamped in the slot by its nut, while the other is shown with a tap-hole in its stud H, and provided with a screw, 7r, extended through the end of the cross-head to a hand wheel, I, by which it may be turned and the movable guide adjusted at anydesireddistance from the fixed one. This arrangement for moving one guide by an adj usting-screw was invented by me and applied to machines havingthe pillanextended through the end of the cross'head and secured by a nut upon the upper side. In such con struction the adj UStlUg-SCIGW necessarily penetrated the head of the pillar to enter'the slot in the middle of the cross-head, and the crosshead could not be removed from the pillar without removing screw 7; from its place. As the location of the knives and the use of a screw, as shown in the section of the guide at a in Fig. 4, for retaining them to the seam rendered them very difficult of access, it was necessary to remove and invert the cross-head to apply a screw-driver to their heads, and my improved mode of connecting the cross-head to the pillars was devised to permit such removal with facility. I therefore provide the cross-head at each end with a hub or boss, in which is formed a socket, c, to receive the upper end of the pillar. By means of awedge IOC or set-screw, or by a pin, as shown atfin Fig. 1, the cross-head is secured to each pillar and can be detached with the utmost convenience.

To show the construction of the guides and the location of the knives in between them, one of the knives and its seat 1' and screw it are shown in section in Fig. 4, and oneot the knives is omitted in the guides in Fig. 2. The seat t does not extend from the stud 11 all the way to the notch D,bnt only thedepth of the block m, formed inside each guide to press upon the upper side of the t ace and regulate the cut of the knives when rounding the upper corners at both sides, as with the knives shown in Fig. 4. Other knives having a straight outting-face may be used, as shown in Fig. 6, and would merely edge the strap as it passed be tween them.

From the above description the purpose and scope of myinvention willbeeasily understood; and

I therefore claim the same as follows:

1. In a trace-trimming machine having a clamp and cross-head for carrying the guides, mounted upon pillars for the purpose described the combination, with the cross-head 0, formed with sockets 0 upon its lower side, for the purpose described, of the pillars A, removably secured therein, as by pinsf, for securing access to the knives at pleasure, substantially as herein set forth.

2. In combination with the cross-head formed with slot I, the studs H, provided with knives and double guides,arranged as described, and the screw 7:, inserted in the end of the crosshead and in one of the studs H, and operated to adjust the distance of the guides from one another, substantially as shown and described.

In testimony whereof I have hereunto set mvhand in the presence of two subscribing witnesses.

HENRY F. OSBORNE.

Witnesses:

TI-IOS. S. CRANE. V. F. D. CRANE. 

